Describe special relationship between convergent evolution organisms australia

describe the relationship between each pair of terms? | Yahoo Answers

describe special relationship between convergent evolution organisms australia

A. Describe the different types of hereditary variability. L. PETERSON/ ECHS Describe the special relationship between the two terms in each of the following pairs: A. Convergent evolution of organisms and Australia B. Blood groups. Convergent evolution across the Australian continent: ecotype .. The annual mean CMI depicts the relationship between plant water demand. We can directly observe small-scale evolution in organisms with short lifecycles . This process is called convergent evolution. The marsupials of Australia, Darwin's finches in the Galápagos, and many species on the Hawaiian Islands are unique to their island settings, but have distant relationships to ancestral species.

However, taking this to a greater extreme, the terror birdsGastornithiformes and dromornithids ironically all extinct all evolved the similar body shape flightlessness, long legs, long necks, big headsyet none of them were closely related.

describe special relationship between convergent evolution organisms australia

They also share the trait of being giant, flightless birds with vestigial wings, long legs, and long necks with the ratitesalthough they are not related. The former inhabit Africa and the latter the Americas, and they belong to different lineages of Passerida.

Describe the relationship between each pair of terms?

While they are ecologically quite similar, no satisfying explanation exists for the convergent plumage; it is best explained by sheer chance. The chimney swift was originally identified as chimney swallow Hirundo pelagica by Carl Linnaeus inbefore being moved to the swift genus Chaetura by James Francis Stephens in In neither case are the similar species particularly close relatives.

These types of birds are not closely related.

describe special relationship between convergent evolution organisms australia

Both have evolved a retractable sickle-shaped claw on the second toe of each foot, both have feathers, and both are very similar in their overall physical appearance and lifestyle.

DolphinswhalesAmazonian manatee and pinnipeds can do the same. Called Unihemispheric slow-wave sleep. Neil Shubinsuggests the animal could prop up on its fins to venture onto land, though many palaeonthologists reject this idea as outdated Boleophthalmus boddarti - a mudskipper which is believed to share some features with extinct fishapods in terms of adaptations to terrestrial habitats A group of mudskippers coming ashore - they use pectoral fins to prop up and move on land.

Indicate with some explicitness the type s of phenotypic effects - 1 point; spell out how the gene change leads to phenotypic change - 1 point; Recombination: Isolation leads to divergence - 1 point; mechanism for the build-up of difference - 1 point; Sympatric: Ecological including seasonal isolation C.

The concept of speciation was worthy of points, but a student could achieve a score of 15 without including a discussion of speciation.

List of examples of convergent evolution

Any student who omitted any reference to any of the other four parts could achieve only a maximum of 12 points. Within these limits, a single point was given for every valid idea presented. Reproductive isolation by mutations and changes in gene pools.

Definition of a new species. Adaptations environmental and behavioral may continue isolation after barriers no longer exist.

Convergent evolution - Wikipedia

Types of barriers that can physically separate populations. Most speciation initiated by barriers. Barriers may result in environments that produce different selective pressures. Similar environments pose similar challenges to survival, and traits that aid in survival are selected for in each environment. Convergent evolution is seen in the fusiform tapering toward the end shapes and similar countershading coloration of sharks and dolphins, both of which are adapted to marine environments.

List of examples of convergent evolution - Wikipedia

Their shape facilitates rapid and efficient A sand skink in Polk County, Florida. Some of the most striking examples of convergent evolution are found in desert lizards throughout the world.

Convergent Evolution in Desert Lizards Some of the most striking examples of convergent evolution are found in desert lizards throughout the world. Australian and North American deserts each support a cryptically colored lizard species that is specialized to eat ants and is protected by sharp spines. The Australian species, the thorny devil Moloch horridus, Agamid family is only distantly related to the American species, the desert horned lizard Phrynosoma platyrhinos Iguanid familyas shown by sequencing deoxyribonucleic acid DNA.

They are much more similar anatomically than either is to its closest living relatives.